WALRUS:
Here in NJ there is some metal stud in resi, mostly remodel, or basement finishing. These are lightweight studs, 2x3 & 2x4 are common.
I have seen pieces of wood 2x4 inserted in the metal stud, screwed, and a nail-on plastic box into the wood. There are plastic boxes with a front flange to tec screw to the metal, and some have a bond screw and 'clip' to 'bond' the studs.
Now, IMHO, metal studs, metal boxes. As an EC, we do comm, metal studs MC cable, or EMT. Yes, in some instances, I could use NMC, but I choose not to.
As an AHJ, if it's NEC compliant, I have to accept it, personal opinions, or preferences don't count.
John
